The Sanctuary is a unique building exclusive to the ∑∫ỹriȱŋ that produces one star for every nearby wild animal. It is unlocked with Forestry, and replaces the Clear Forest ability.
The Sanctuary attracts wild animals in forests adjacent to the building every 3 turns. You can place the Sanctuary anywhere adjacent to a preexisting animal, otherwise you won't be able to place it. You can only have one Sanctuary per city.
If all nearby animals are removed by being turned into Polytaurs or been hunted, the Sanctuary will disappear.
You can place a Sanctuary on a wild animal, but as soon as you place it, it will disappear, along with the animal.